Type-writing machine



(No Model.) 2 sheets-sheet 1. W. BAKER.

TYPE WRITING MACHINE.

Patented'July 1'5, 1890 Tm; Noma Paran co., PHoTcrLrrrlo., msnwcn'om n.c.

(No Model.) 2 Sheets--Sheet 2.

W. BAKER.

TYPE WRITING MACHINE.

No. 432,154. Patented July l5, 1890.

UNITED STATES A PATENT OEEICE.

XVALTER BAKER, OF ILION, NEWT YORK.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 432,154, dated July 15,1890.

Application tiled December 28.1888. Serial No. 294,895. (No model.)

To all whom t may concern.-

Be it known that I, METER BAKER, of Ilion,in the county of Herkimer andState of New York, have invented certain new and useful Improvements inType-Vriting Machines, of which the following is a specification.

My invention relates to type-writing machines, and has reference moreparticularly to that class in which each type-bar is provided with twoor more t-ype or priutin g characters, the invention consisting in anovel construction and arrangement of parts, as hereinafter set forthand claimed, whereby either of the types or printing characters isadapted or permitted to make an impression at will. This result issecured by mounting the type-bar supports and their operatingkeys in aframe which is adapted to slide upon or move relatively to the mainframe and to the traveling carriage, so as to bring one or the other ofthe printing characters directly under the center of theprinting-surface.

ln the accompanying drawings, Figure l is a side view, partly insection, of my machine; Fig. 2, a top plan View of the same, and Fig. 3a front face View.

A indicates the main frame of the machine, comprising a base B,u'prights C C, and a top plate D. The latter is provided with a centralopening, through which the type strike the roller E, mounted upon thecarriage F, which latter is supported, at its front by a wheel a and atits rear by a guide-rod b, as usual in this class of machines.

'lhe base B is an open rectangular frame, having on the inner faces ofits sides flanges c, which project from the lower edgethereof, as shownin Fig. l, the said flanges being provided at opposite ends with raisedand dressed bearing-faces d to receive the sliding frame G. This frame Gcomprises two side pieces H H, connected at their front and rear endsand extending upward and bent inward to Ward each other, where they areconnected with the basket I, in or to which the typebars J are hinged orpivoted.

The key-levers K are connected to the typebars J by links L, as is usualin this class of machines, and all of the key-levers arc pivoted attheir ends, in any suitable manner, to the sliding frame G, so as tomove back and forth with the latter.

M M indicate two elbow-levers, pivoted at their upper ends to the sideframes H H and at their lower ends to the side frames of the base B ofthe main frame. The short arm e of lever M extendsforward of its pivotand is bent laterally or provided, with a laterallyextending pin f, uponwhich the key-lever K marked lower case rests. The short arm e of leverM extends rearwardly, and is likewise bent laterally or provided with alaterally-extending pin f, upon which the key-lever K marked upper caserests. Move- :nent of the levers M and M forward and backward causessimilar movements of the frame G.

It should be noted that the levers M M move backward and forwardtogether; but when the arm e of lever M is raised the corresponding armc of lever M is depressed, and vice versa. From this it follows thatwhen the key-lever marked lower case is depressed it will depress orbear down upon the pin f and tip or rock the lever M forward and bringthe frame G in such position as to permit the lower-case typeg to strikethe roller, and in thus actuating the frame the arm e on lever M will bethrown upward and carry with it the key-lever marked upper case.7 Thenthe upper-case key-lever is depressed, it throws the levers M Mbackward, as shown in dotted lines, the arm e on the lever M falling andthe arm e on the lever M rising and carrying with it the key-levermarked lower case. When the parts are in this position, the upper-casetype 7L is permitted to strike the roller.

The upper case and lower case levers alternate in their movements, onerising as the other falls, and vice versa, these movements beingpermitted by placing the arms e e on opposite sides of the centers ofthe levers M M, which latter, by the way, always move in unison backwardand forward.

lf desired, the frame G may be provided with small wheels or rollers z'to run upon the bearing-faces d, so as to render the movement oi' the'frame easy; but this is not essential.

One of the advantages of the construction IOO 'herein shown is that aComplicated carriage is dispensed with, there being` no mechanismthereon aside from the paper-feed mechanism.

I do not wish to be understood as limiting myself to the application ofthe invention to the particular style of machine herein shown, as it isobvious that with slight modications in the details the principle may beadvantageously applied to other classes or styles of machines. Itdesired, a spring,` N may be employed to hold the frame G in either ofits positions and to return it to such position.

The shiftable frame carrying the key-levers, type-bars, and attendantparts slides back and forth relatively to the main frame, but does notrise and fall as it is shifted.

Having thus described my invention, what I claim is- In combination withthe frame Aof a type-` and free to slide within the frame A, a series oftype-bars J, pivoted to the upper end of the frame G and provided withtypes or characters g 71., a series of key-levers mounted upon the frameG and connected with the typebars, a traveling carriage F, provided withan impression-cylinder E, elbow-levers M M', pivoted at their lower endsto the main frame A, studs ff', secured to the levers M M and projectingupon opposite sides of a line passing,` through the axes of the levers,a slotted connection between the upper ends of the le- Vers'M M and theframe G, a spring N, and key-levers resting upon the studsff, allsubstantially as shown and described.

In witness whereof I hereunto set my hand in the presence of twoWitnesses.

IVALTER BAKER. Witnesses:

JAS. P. BALLOU, PHILIP CARNEY.

